Technology Requirements for DAG-TM
The minimum equipage required to operate in a DAG-TM system will be the same as that required to operate in the current Air Traffic Control (ATC) system, in order to facilitate NAS access by all users. Users make business decisions on equipage level based on their cost/benefit assessments. Fully equipped users gain the maximum benefits due to the full range of options available to them for optimizing operations of individual aircraft and/or their entire fleet; these options include capabilities for flight autonomy, negotiation of user-preferred trajectories with the ATSP, and influencing ATSP decisions. Users who equip at an intermediate level gain significant benefits (over the current system) due to the options available to them for influencing ATSP decisions, including negotiation of user-preferred trajectories; however, they cannot conduct autonomous flight operations. This intermediate level of equipage also represents an intermediate point on the spectrum of NAS evolution towards DAG-TM. Even minimally equipped users may gain some benefits (compared to the current system) due to the improved overall efficiency of NAS operations and greater accommodation of user-preferences by the ATSP.
A core technology requirement for DAG-TM is the enabling of universal access/exchange of information between all NAS stakeholders. Users with full or intermediate equipage utilize a suite of AOC-based and/or FD-based Decision Support Tools (DSTs) to plan and execute their operations. They also use datalink capabilities to access and exchange information, including information on the positions and velocities (and possibly intent) of other aircraft on the vicinity.
Potential Benefits of DAG-TM
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Increased user efficiency/flexibility. DAG-TM offers users maximum opportunity to self-optimize their operations (both fleet-wide and flight-specific), within the dynamic constraints of the ATM system.
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Increased system capacity. Delegation of separation responsibility to appropriately equipped aircraft and ATSP-based DSTs could potentially reduce controller workload, thereby enabling the ATSP to handle more traffic.
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Increased system safety, due to a significant increase in situational awareness and distribution of workload.
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Distribution of the cost for NAS modernization between users and the ATSP.
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Decreased user dependence upon ATSP services and a ground-based infrastructure; this may also enhance global interoperability.
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本文鏈接地址：Concept Definition for Distributed Air/Ground Traffic Management (DAG-TM)(3)
